JPS63448Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a label printer that prints predetermined data on a label made of heat-sensitive coloring paper using a thermal head.

This type of printer prints by intermittently pulling out a long paper mount and bringing the thermal head into contact with the label affixed to the mount with a predetermined contact pressure. The parts that are not covered also touch the mount. For this reason,
When pulling out the mount, the thermal head may peel up the label from the mount, and the adhesive and paper dust adhering to the mount adhere to the thermal head, making it difficult to print well.

This invention was developed in consideration of these points, and the purpose is to provide a label printer that can prevent the label from being turned up by the thermal head and prevent foreign matter from adhering to the backing paper to the thermal head. .

This device provides an actuating body that seesaws on a mount that holds the label in a pasted state, a thermal head is provided at one end of this actuating body, a rotating body or a sled-like body is provided at the other end, and the rotating body or sled-like body is The actuating body seesaws by resiliently joining the body to the label and backing paper, causing the thermal head to approach the label during printing, thus causing the leading edge of the label to flip as it passes under the thermal head. This structure prevents the thermal head from being exposed to adhesive and paper dust adhering to the mount, and prevents problems such as adhesion of adhesive and paper dust to the thermal head.

An embodiment of this invention will be described based on the drawings. Reference numeral 1 denotes a long mount on which a large number of labels 2 made of heat-sensitive coloring paper are pasted at equal pitches. One end of this mount 1 is held in a rolled state by a supply section 3, and the other end is wound around a winding section 4. In the path of the mount 1, a label peeling body 6 having a bending part 5 that bends the mount 1 at an acute angle, and a feeding section 7 that intermittently pulls out the mount 1 are provided. A platen 9 facing the thermal head 8 is buried in the surface.

Therefore, the mount 1 is placed above the label peeling body 6.
A support shaft 10 is fixedly provided, which is perpendicular to the direction of withdrawal of the actuator, and an actuating body 11 is held on this support shaft 10 so as to be able to see-saw freely in the front-rear direction. This operating body 1
The thermal head 8 is supported at the front end of the head 1, and a rotating body 12 made of rollers is rotatably held at the rear end. The actuating body 11 is urged backward and downward.

In such a configuration, in the state shown in Figure 1,
The rotating body 12 is located at the front end of the label 2 that is next to the label 2 that is currently being printed. As a result, the actuating body 11 is biased backward and downward, but is deflected forward and downward by the label 2, thereby bringing the thermal head 8 into contact with the label 2 to be printed with a predetermined contact pressure. When a print signal is applied in this state, the thermal head 8 heats the label 2, and necessary data is printed on the label 2. Then, in response to the print end signal, the feed section 7
rotates at a certain angle and pulls out the backing paper 1 by a certain amount, and the backing paper 1 is bent at the bending part 5, so that the label 2 is peeled off from the backing paper 1, and only a part of the rear end has a dimension of a, and a label peeling body 6 is formed. It is kept attached to.
Since the distance between the bent portion 5 and the platen 9 is small, the dimension a is also small. Therefore, an automatic label pasting machine can be set in front of the bent portion 5, and the work of separating the label 2 from the label peeling body 6 and pasting it onto the product can be performed without missing any label 2.

Then, when the mount 1 is pulled out, the mount 1
In the area where label 2 is not attached,
The rotating body 12 is joined to the mount 1 as shown in FIG. 2, and the actuating body 11 is deflected rearward and downward to float the thermal head 8. As a result, the distance between the rotating body 12 and the thermal head 8 is determined in relation to the length of the label 2, and when the thermal head 8 faces a part of the mount 1 to which the label 2 is not attached, or when the front edge of the label 2 is When facing the thermal head 8, the thermal head 8 can be deflected upwardly. Therefore, the thermal head 8 does not turn up the front edge of the label 2 passing under it, and the adhesive, paper dust, etc. that adhere to the mount 1 do not adhere to the thermal head 8. Thereby, a good print condition can be obtained.

Note that the thermal head 8 is moved up and down depending on the thickness of the label 2, but by positioning the spindle 10 closer to the rotating body 12, the thermal head 8 can be separated from the mount 1 and the label 2 with a margin. Is possible.

Further, although the rotating body 12 sometimes rides on the label 2 from the mount 1, the label 2 is never turned over. Even if a sled-shaped body tilting backward and upward is used instead of the rotating body 12, it is possible to control the vertical movement of the thermal head 8 without turning up the label 2.

This device is configured as described above, so that when the label is placed under the thermal head and printed, the thermal head is brought into contact with the label, and when the part to which no label is attached passes under the thermal head, the thermal head is brought into contact with the label. can retract the thermal head upwards, thereby preventing the label from being turned up by the thermal head and foreign matter on the mount from adhering to the thermal head, resulting in the effect of obtaining a good print condition. It has the following.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a partially sectional side view, and FIG. 2 is a partially sectional side view showing the operation of the operating body. 1... Mounting paper, 2... Label, 7... Feeding section, 8
...Thermal head, 9...Platen, 11...
Working body, 12...Rotating body.

Claims (1)

[Scope of utility model registration request] A long mount, on which a large number of labels made of heat-sensitive coloring paper are pasted at equal pitches and spaced from each other, is intermittently pulled out by a feeder, and a see-saw is installed with an axis perpendicular to the drawing direction of the mount. A movable actuator is provided, one end of the actuator supports a thermal head facing the platen, and the other end is provided with a rotary or sled body that contacts the mount and the label, and the thermal head is placed in front of the label. The length of the actuating body is determined so that the rotary body or the sled-like body is located in the gap between the labels when the rotary body or the sled-like body is located at the edge, and the rotary body or the sled-like body bounces against the mount and the label. A label printer characterized in that the actuating body is biased so as to come into contact with the object.